What was found
(CAN) THE FLIGHT CREW REPORTED THE JOY STICK INSTALLED ON THE PILOTS MULTIFUNCTION CONTROLLER FAILED TO MOVE THE ONSCREEN CURSOR IN AN UPWARD DIRECTION. SIDE AND DOWN MOVEMENT IS POSSIBLE . THIS FAILURE DISABLES SOME FUNCTIONALITY OF THE FLIGHT MANAGEMENT SYS INSTALLED IN THIS ACFT. A REPAIRED UNIT WAS INSTALLED AND TESTED IAW THE MFG PC12/47E MM INSTRUCTION. THIS UNIT HAS BEEN REPLACED 4 TIMES PREVIOUS. THE UNIT REMOVED HAS BEEN INSTALLED SINCE NOV. 13, 2008 WITH 458 HRS INSTALLED.